Viessmann Cascade control unit Installation, Operating And Service Instructions page 27

Multi-boiler control unit
Start-up delay
A delay before start-up of individual boilers can be selected, for example to
prevent boilers from cycling.
P
A
t
0
RV
K1
t
We
A Boiler base load 1
B Mod. to boiler 1
C Lag boiler base load
D Mod. to lag boiler
E Boiler modulation range
F Lag boiler base load
G Boiler base load 1
Set values (multi-boiler control unit)
Boiler start-up
delay
(cont.)
D
C
B
t
RV
FK
FK
Start-up delay.
7 min
E
FK Lag boiler
K 1 Boiler 1
P System output
(two boiler system)
t Control delay
RV
t Shutdown delay
Wa
t Start-up delay
We
Functions
F
G
t
t
Wa
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